Sheryl Crow has confirmed that she has a brain tumor six years after beating breast cancer, but the singer has assured fans that she will be fine.

"Hey everyone," the Grammy award winner wrote on Facebook, "please don't worry about my 'brain tumor,' it's a non-cancerous growth. I know some folks can have problems with this kind of thing, but I want to assure everyone I'm OK."

"I'm feeling very healthy and happy, and having a great time on the road playing with my new band. I'm busy working on my next record too, which I'm very excited about ... and I'll be on The Tony Awards this Sunday," she added.

The singer reportedly grew concerned about her memory when she began forgetting the lyrics to her hit songs including "Soak Up The Sun," and opted for a brain scan where doctors discovered the tumor.

Crow, 50, was diagnosed with meningioma, which is said to be a common form of brain tumor that rarely requires surgery.

The tumor, which was once found in actresses Elizabeth Taylor and Mary Tyler Moore, develops from the brain and spinal cord linings.